Collapsing Building



		    |                               |
		    |        Remainder of           |
		    |       Building Weight         |
		    |       !             !         |
		    |                               |
		    |_______________________________|
		    |_______________________________| - Falling Slab
		    |  !                         !  |
		    |                               |
		   ||                               ||
		  |||;       Crushing Slab         ;|||
		 ||||;;                           ;;||||
   _____           :|_______________________________|:
     |             :|_______________________________|:
     |            ::|_______________________________|::
    Hw           :::|_______________________________|:::
     |          ::::|_______________________________|::::
     |         :::::|_______________________________|:::::
   __|__      ::::::|_______________________________|::::::
		Rb                                     Rc
				  Wr
 _
 _  slabs

 | wall & it's collapse
 ; rubble piled inside onto slab
 : cumulated outside rubble pile